and un ambassador susan rice went to capitol hill to meet with republican senators. she's high on the list to secretary of state. she's been under fire from senate republicans over the attac killed four americans, including u.s. ambassador chris stevens. today's meeting did not go well. >> we're doubled by many of the answers that we got. i'm more disturbed now than before. >> the republican senators stopped short of saying they'd block the nomination. they say they need more information and have more questions about the incident in benghazi. >> we're coming up on december to 1. that is the day mayans said the world would end. one scientist has been answering countless letters about the rumors. david morrison has a big job. >> iville lun teared to answer the questions the public sends in. >> some of the pivotal scientific questions of our time. >> these are questions about life in the universe. and that went along fine until fours years ago. suddenly i started getting questions about the end of the world.:sap >> dooms day. some say the ancient mayan days on december